Weak toRockElectricIce ×1.6

Attacker	Type	Moveset	DPS
Regieleki	Electric	Lock OnThunder CageLegacy	49.6
Zeraora	Electric	Volt SwitchPlasma Fists	42.6
Zekrom	DragonElectric	Charge BeamFusion BoltLegacy	41.6
Xurkitree	Electric	Thunder ShockDischarge	41.1
Glimmora	RockPoison	Rock ThrowMeteor Beam	37.6
Rampardos	Rock	Smack DownRock Slide	37.3
Eternatus	PoisonDragon	Poison JabDynamax CannonLegacy	36.0
Deoxys	Psychic	Charge BeamThunderbolt	35.8
Gigalith	Rock	Lock OnMeteor BeamLegacy	35.8
Electivire	Electric	Thunder ShockWild Charge	35.6
Tyrantrum	RockDragon	Rock ThrowMeteor Beam	34.9
Raikou	Electric	Volt SwitchWild Charge	34.6

Rainy boosts the Electric attacks above. Partly cloudy and Windy boost Swellow.

Level 40, 15 attack IV, costed against Swellow's own defense and typing, one per evolution family.

Swellow's moveset, CP and shiny All counters Raid board

Questions people ask

What is Swellow weak to in Pokémon GO?

Swellow takes 1.6 times from Rock, Electric and Ice.

What's the best counter to Swellow?

Regieleki with Lock On and Thunder Cage, worth 49.6 damage per second against Swellow's own defense. The full ranking is above.